@dc42 will the RRF ever support it?
The wiki page says that "Note that axes are mapped in the order XYZUVWABC, where X=0, Y=1, Z=2, U=3 etc, not by driver number, so X0:3 means 'map axis 0 (X) and 3 (U) to X'." I mean, if Z axis don't work this information is misleading... I actually made a whole machine based on this

Hi,

I'm building a printer with IDEX system. One extruder is using X and Z axis but another one should use U and W axis.

I can put the second extruder to use the U axis (I mean, I call "T1" and the second extruder moves on "G1 X" commands) but the W axis don't move, only the Z axis (from the 1st extruder). W axis can move manually on the dashboard, do homming, etc.

This is my config.g file:

; Drives
M569 P0 S1                                         ; physical drive 0 goes forwards X connection - 
M569 P1 S1                                         ; physical drive 1 goes forwards Y connection - Y2
M569 P2 S1                                         ; physical drive 2 goes forwards Z connection - Y1
M569 P5 S0                                         ; physical drive 5 goes forwards X0 (duex expansion drive 5) - DRIVE EXTERNO
M569 P6 S1										   ; physical drive 6 goes forwards X1(U) (duex expansion drive 6) - DRIVE EXTERNO
M569 P7 S1 										   ; physical drive 7 goes forwards Zextrusora0 (duex expansion drive 7) - DRIVE EXTERNO
M569 P8 S1										   ; physical drive 8 goes forwards Zextrusora1 (V)(duex expansion drive 8) - DRIVE EXTERNO
M569 P9 S1 ;extrusora 2

M584 X5 Y1:2 Z7 U6 W8 E0:9 P6                        				; set drive mapping

; Endstops
M574 X2 S1 P"!xstop"                               ; configure switch-type (e.g. microswitch) endstop for low end on X via pin ^xstop
M574 Y2 S1 P"ystop+zstop"                          ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin ^ystop
M574 Z2 S1 P"!exp.e5stop"                           ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin ^zstop
M574 U1 S1 P"!e0stop"							   ; configure active-low endstop for high end on U via pin e0stop
M574 W2 S1 P"!e1stop" 	


; Tools
M563 P0 D0 S"ExtDireita"                           ; define tool 0
G10 P0 X0 Y0 Z0                                    ; set tool 0 axis offsets
G10 P0 R0 S0                                       ; set initial tool 0 active and standby temperatures to 0C

M563 P1 D1 X3 Z5 S"ExtEsquerda"                           ; define tool 0
G10 P1 X0 Y0 Z0                                    ; set tool 0 axis offsets
;G10 P1 R0 S0                                       ; set initial tool 0 active and standby temperatures to 0C

I'm using a Duet 2 Wifi with firmware version: RepRapFirmware for Duet 2 WiFi/Ethernet 3.4.0 (2022-03-15)
Duet WiFi Server Version: 1.26

There are some missing commands on the code above but not related to drives or tools.
Can somebody help me?
Thanks in advance